PC Slotted Knurled Thumb Screw
PC slotted knurled screw is a high-performance engineering plastic fastening component made from polycarbonate (PC), designed for manual adjustment, corrosion resistance, electrical insulation, and high impact strength applications. The PC slotted knurled screw combines a knurled thumb grip with a slotted drive, allowing both tool-free hand tightening and optional screwdriver operation.
The PC slotted knurled screw is widely used in electronics housings, transparent assemblies, automotive interior components, lighting systems, and industrial equipment where durability, aesthetics, and lightweight performance are required.

Product Overview
The PC slotted knurled screw is designed for applications requiring frequent adjustment and easy handling. The knurled outer surface improves grip, while the slotted head provides additional tightening flexibility.
This PC slotted knurled screw is commonly used in lightweight assemblies where corrosion resistance, insulation, and mechanical strength are important. Polycarbonate material provides significantly higher impact resistance compared to PP, PVC, and standard nylon materials.
As a reliable industrial plastic fastener, it is widely used in OEM production and precision engineering systems.
Product Specifications
| Item | Description |
|---|---|
| Product Name | PC Slotted Knurled Screw |
| Material | Polycarbonate (PC) |
| Head Type | Knurled Thumb Head |
| Drive Type | Slotted |
| Thread Type | Metric Machine Thread / Self-Tapping (optional) |
| Diameter Range | M3–M12 |
| Length Range | 6mm–100mm |
| Color | Transparent / Black / Custom |
| Density | ~1.20 g/cm³ |
| Electrical Conductivity | Non-conductive |
| Packaging | Bag / carton / OEM packaging |
| Customization | Size, color, thread type available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | 55–70 MPa |
| Impact Resistance | Excellent (high toughness) |
| Heat Resistance | Up to 120°C |
| Chemical Resistance | Good (mild acids, oils) |
| Electrical Insulation | Excellent |
| Transparency | Optional high transparency grade |
| Water Absorption | Low |
| Manufacturing Standard | Industrial OEM specification |
Materials and Manufacturing Process
The PC slotted knurled screw is manufactured using precision injection molding and controlled processing technology to ensure stable performance and dimensional accuracy.
- Raw material selection: High-grade polycarbonate resin
- Drying process: Moisture control before molding
- Injection molding: Formation of knurled thumb head structure
- Slotted drive forming: Integrated mold design
- Thread forming: Molded or secondary processed threads
- Cooling and stabilization: Reduces internal stress
- Trimming: Removal of flash and excess material
- Inspection: Dimensional, mechanical, and visual testing
- Packaging: Clean and protective packaging
Each PC slotted knurled screw is produced under strict quality control to ensure consistent industrial performance.
Applications of the Product
PC slotted knurled screws are widely used in:
- Electronics: Transparent housings and device covers
- Automotive: Interior trim and adjustable components
- Lighting systems: LED fixtures and lamp assemblies
- Industrial equipment: Lightweight adjustable structures
- Medical devices: Non-metallic precision housings
- Consumer electronics: Protective covers and panels
- Smart devices: Manual adjustment mechanisms
Their combination of grip and strength makes them ideal for frequent adjustment applications.
Why Choose This Product
- High impact resistance polycarbonate material
- Knurled head for easy manual tightening
- Slotted drive for optional tool use
- Lightweight and non-conductive structure
- Suitable for transparent or aesthetic designs
- Better strength than PP and PVC materials
- Heat resistance up to 120°C
- OEM customization available
- Stable performance in industrial environments
The PC slotted knurled screw provides a strong balance of usability, durability, and modern design.
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fasteners and engineering plastic components for global OEM applications.
- Advanced injection molding capability
- Stable mass production for industrial supply chains
- Custom engineering support for plastic fasteners
- Strict quality inspection and control systems
- Global export experience in fastener manufacturing
- Technical consultation for material selection
Flybear delivers reliable fastening solutions for electronics, automotive, and industrial plastic applications worldwide.
Quality Inspection and Control
Strict quality control ensures stable product performance:
- Raw material resin testing
- Dimensional accuracy inspection
- Knurling texture quality inspection
- Mechanical strength testing
- Impact resistance validation
- Thread fit testing
- Surface quality inspection
- Packaging verification
All processes follow ISO-based quality management standards.
Selection Guide
When selecting PC slotted knurled screws, consider:
- Load and torque requirements
- Frequency of manual adjustment
- Temperature environment
- Chemical exposure conditions
- Size and thread compatibility
- Aesthetic or transparency needs
Proper selection ensures long-term reliability and usability.
FAQ
1. What is a PC slotted knurled screw used for?
It is used for manual adjustment and lightweight fastening applications.
2. Can it be tightened by hand?
Yes, the knurled head allows easy hand operation.
3. Is PC stronger than PP or PVC?
Yes, PC has higher impact resistance and mechanical strength.
4. Can it be used in electronics?
Yes, it is non-conductive and safe for electronic devices.
5. Can custom sizes be produced?
Yes, Flybear supports full customization.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
Contact us for quotation, customization, and technical support via Contact Us.




